1383956238 has 32 divisors (see below), whose sum is σ = 3329821440. Its totient is φ = 374604480.

The previous prime is 1383956209. The next prime is 1383956243. The reversal of 1383956238 is 8326593831.

It is a happy number.

It is a super-2 number, since 2×1383956238² = 3830669737398225288, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 866343 + ... + 867938.

It is an arithmetic number, because the mean of its divisors is an integer number (104056920).

Almost surely, 2^1383956238 is an apocalyptic number.

1383956238 is an abundant number, since it is smaller than the sum of its proper divisors (1945865202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1383956238 is a wasteful number, since it uses less digits than its factorization.

1383956238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1734312.

The product of its digits is 933120, while the sum is 48.

The square root of 1383956238 is about 37201.5623059032. The cubic root of 1383956238 is about 1114.3991851150.

The spelling of 1383956238 in words is "one billion, three hundred eighty-three million, nine hundred fifty-six thousand, two hundred thirty-eight".